On Christmas Eve in 1800, English scientist William Hyde Wollaston and his colleague Smithson Tennant, unwrapped a gift — to themselves. It was a …
Rhodium Is Earth's Rarest and Most Expensive Precious Metal
Want the numbers? Consider that today the price of rhodium is $14,000 per ounce, while gold is a mere $1,783 per ounce. Here's the scoop on this relatively unknown element and four other transition metals.